Exhibit 32.4

                       RECKSON OPERATING PARTNERSHIP, L.P.
  CERTIFICATION OF MICHAEL MATURO, EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL
    OFFICER OF RECKSON ASSOCIATES REALTY CORP., THE SOLE GENERAL PARTNER OF
        RECKSON OPERATING PARTNERSHIP, L.P., PURSUANT TO SECTION 1350 OF
                CHAPTER 63 OF TITLE 18 OF THE UNITED STATES CODE

     I, Michael Maturo,  Executive Vice President and Chief Financial Officer of
Reckson  Associates  Realty Corp., the sole general partner of Reckson Operating
Partnership,  L.P.  (the  "Company"),  certify  pursuant  to Section  906 of the
Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350, that:

1.   The Current Report on Form 8-K of the Company filed on January 16, 2004
     (the "Report") fully complies with the requirements of Section 13(a) or
     15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d)); and

2.   The information contained in the Report fairly presents, in all material
     respects, the financial condition and results of operations of the Company.



January 15, 2004                   /s/ Michael Maturo
                                   --------------------------------------------
                                   Michael Maturo
                                   Executive Vice President and Chief Financial
                                   Officer, Reckson Associates Realty Corp.,
                                   the sole general partner of Reckson Operating
                                   Partnership, L.P.


A signed original of this written statement required by Section 906 has been
provided to Reckson Associates Realty Corp. and will be furnished to the
Securities and Exchange Commission or its staff upon request.


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